Selective signaling device.



J. A. WOTTON.

SELECTIVE SIGNALING DEVICE. APPLICATION FILED AUG.31,1911.

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J. A. WOTTON. SELECTIVE SIGNALING DEVICE. APPLICATION PILEID'AUGJI,1911.

Patented Jan. 12,1915v SHEETS-SHEET 2.

v //7 vemo/ James A. Wofian.

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JAMES A. WOTTON OF CRANFORD; NEW JERSEY, ASSIGNOR TO wESTEfiNEl-ECTfilfi COMPANY, OF NEW YORK, N. Y., A CGBPOBATION OF ILLINOIS.

SELECTIVE SIGNALING DEVICE.

i ea-sec.

Specification of Letters Patent.

patented Jan. is, ieis'.

Application filedAugustM, 1911. Serial No. 647,080.

and a slow acting magnet adapted'to receive current in series, a'movable contact-making device, and stepping and holding pawls controlledby said quick and slow-actingmagnets for causing the advance of saidmovable contact-making device,

The invention relates more particularly to a selective signaling deviceof this class for us'ein a system wherein selection is made by advancingall of theselectors simultaneously until certain ones comprising a grouphave closed contacts individual to each selector which causes therelease of the selectors of that group and again advancing all of theselectorsuntil the particular one of a released group closes a signalingcontact. I

The object of the invention is to provide a simple and efiicientcombination of contacts on the selector for accomplishing this pur- Ipose, and consists specifically in,;providing two contact: arms ofdiiferentlengths preferably secured to a ratchet wheel andlocatingadjacent to the ratchet wheel and in the path of the movement of saidcontact arms two spring contact. members, one of which cooperates witheither of said arms. to close a releasing circuit for the, selector, theother of which is brought into operation only in conjunctionwith thelonger of-said arms and closes a signaling circuit.

In the drawings illustrating this invention-Figure 1 is a frontelevation of the selector with parts broken away;'Fig. 2 is a schematicof the selector illustrating the position of the parts and circuitscompleted with one of the contacts closed; Fig. 3 is a schematic of theselector illustrating the position of the parts and the circuitscompleted with the other of said contacts closed; Fig. l is afragmentary detail view showing the arrangement of the selector contactsprings.

In the drawings, 1 designates a base upon which. is mounted an invertedU-shaped frame having side members 2, 2, a top memher 3 and supporting,lugs 4, 4.

Suspended from the top member .3 of the U-shaped frame are twoelectromagnets 5 and 6 each comprising two coils.

Pivotally supported near the lower end .of the U-shaped frame arearmatures 14 and 15', the armature It being responsive to electromagnet5 and armature-15 being responsive to electromagnet 6, said electroemagnet 6 being made slow-acting, as more clearly indicated in Figs. 2and 3. The ar matures 1d and 15 are provided with arms 25 and 26respectively which are brought, out through openings in the frame andare extended upwardly along the end of said frame.

Attached to the upwardly extending arm 25 is an arm 27 carrying at itsupper end-a pivotally mounted spring pressed pawl 28 adapted in themovement of the armature 14 to engage the teeth of a ratchet wheel 29carried in an auxiliary frame 30 mounted upon the U-shaped frame. Aholding pawl 31 mounted upon the frame of the selector is adapted to bedrawn into engagement" with the ratchet wheel 29 by the action of aspring 32.

Secured to the armature 15 are two angularly disposed arms 33 and 34:,the arm 33 being-normally in engagement with the pawl 28 and the arm3,4: with the pawl 31. The.

position upon the-withdrawal of the pawls therefrom. Springs 38 and 39are adapted to return the arms 27 and 34 to normal position whenthecorresponding magnet isdcenergized.

Mountedupon a projecting lug 37 carried by the magnet frame, are twoflexible spring contact members 40 and 4-1. 40 is the shorter and is inmechanical engagement with the arm 27- through a laterally projcctingarm i2(see Fig. 4) on saidspring which engages an insulating pin 43carried by said arm 27. The tension of the spring 40 being ina'direction to force it against the arm 27 said spring will partake ofthe movement of said arm. during the operation of the magnet 5. Thecontact spring The member 41 which is mounted tothe rear and in linewith the spring 40 is provided with a proection 44 which normally bearsagainst an insulating pin 45 on the outer-end of the arm 27 when. theselector parts are in their normal or inoperative position,

and against an insulating button 46 on the outer end of the arm 33 ofthe holding magnet armature when the two armatures are in theirattra'cted position. I

Carried by the ratchet wheel 29 are two contact arms 50.and 51adapted'in the rinsulating pin '45-on the jtheformer case,

. the insulating tation of saidratchet Wheel 'to be brought intoengagement with the contact spring 40.

.As shown in the drawings the contact arm 50 is shorter than the arm 51and when this shorter arm is brought into engagement with the cpntactspring 40, as shown in Fig; 2, it pushes said contact spring away fromengagement with thearm 27 and the contact made by engagement of said arm50 with the spring completes a short circuit of the magnet 6. This willcause the deenergization of the magnet 6 and permit the 25- circuit andis brought about by the engage ment of the contact arm 51' with thespring 40.

As shown in Fig. 3 the engagement'of the arm 51 with the spring '40 willcomplete a short circuit of the holding magnet 6 as in but the arm 51being longer than the arm the contact spring 40 will be held inaposition beyond the outer end of pin 45-so that as a 41 followsthe-arm33 forward upon the re- 5 The lease of the, armature 15 it will intocontact with the spring 40 be brought and a cir- "cuit will be completedfor a signal 60,

In-"the equipment ozta system with selectors embodying this inventionthe selectors willbe arranged" in groups,

prising, say for example, three selectors although/anynumber within areasonable of the se-.

limit may comprise a group. All lectors comprising one group will havetheir arms 50 arranged so that they will be brought into engagement withthe corresponding contact springs in response to the same number ofcurrent impulses sent over the line but no gtwo groups will have theparts 5Q. and 4Q in contact at the same time. separate selectors of eachgroup will be the spring each group com so arranged that a differentnumber of impulses will be required to bring the contact arm 51into-engagement with the spring 40 in the case of each selector. It willbe noted,

however, that one selector of each group may be arranged to have itscontacts 51 and 40 closed in response to the same number ofimpulseswithoutcausing confusion so long as no two groups are releasedby the'same number of impulses.

The battery current tor operating theselectors may be supplied" to theline wires from a central or through the operationofany well-khgwvn formof impulse transmitting apparatus.

lclaimr' bination with a movable circuit-closing member, of contact armscarried thereby, a contact spring adapted to be gaged by each. of saidarms, a second contact spring and means controlling the movement of saidsecond contact spring into engage ment with the first mentioned springwhen said first mentioned spring is'in engagement with one of saidcontact arms. 1

2. In a selective switching device the combination with a movablecircuit-closing ,despatching station separately 'en- 1. In a selective.switchingxdevice the commember, of two contact arms of differentlengths carried thereby, adapted to be separately contact arms, and a acontact spring second contact spring engaged by said brought intoengagement withvthe first mentioned spring only by the engagement of thelonger of said arms with said first mentioned spring- 3. In a selectivesignaling device'the combination 'with a movable circuit-closing member,of electromagnets controlling the movement of said -circuit-closingmember,

contact arms carried by said circuit-closing member, a contact springadapted to be separately engaged by said contact arms, a second contactspring, and means actuated by one of said electromagnets for controllingthe engagement of the second contact spring with the first mentionedspring in such manner that such engagement takes place only when saidfirst mentioned spring is engaged by one'of said contact arms; 4. In aselective signaling device the combination with movable circuit-closingarms, of stepping and holding magnets for controlling the movementofsaid arms-in one direction, a contactspring adapted to be separatelyengaged bysaid contact arms, -.a

second contact spring, and means actuated by said holding magnet forcontrolling the engagement of the. second contact spring with the first.mentioned springin such manner that such engagement takes place only'When said first mentioned spring is engaged by one of said c'ntactarms.

5. In a selective signaling device the combination with a toothed wheeland stepping mentioned spring when said first mentioned spring isengaged by the shorter of said arms and to permit the engagement of saidsprings when said first mentioned spring is engaged by the longer ofsaid arms.

In witness whereof, I, hereunto subscribe my name this 30th day ofAugust A. D. 30

J AMES A. VVOTTON.

Witnesses IRVING MAGDQNALD, MORGAN VVAsHBURN, Jr. v

